Sylvania



v PATENTED JAN. 19, 1904. W. & J.'BOEKEL. PUMP GYLINDER, TANK, AND BASE PLATE.

APYPLIOATION'PILEYD 001a, 1903.

N0 MODEL.

THE ucnms PETERS c0" PuoruLrmq, wnsumomn, a q.

. Patented January 19, 1904.

UNITED STATES PATENT OFFICE.

WILLIAM BOEKEL AND J ULIIIS BOEKEL, OF PHILADELPHIA, PENN- I SYLVANIA.

PUMP CYLINDER, TANK, AND BASE-PLATE.

SPECIFICATION forming part of Letters Patent No. 750,154, dated. January 19, 1904.

Original application filed August 5, 1903, Serial No. 168,326. Divided and this application filed October 3, I903. Serial No. 175,573. (No model.)

To all whom it may concern:

Be it known that we, WILLIAM BOEKEL and J ULrUs BOEKEL, citizens ofthe United States,

residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have To this end we employ a base-plate especially constructed and provided with passages and a check-valve seat and receiving and holding the lower ends ofthe said concentric parts,

the said base-plate being also adapted to and combined with especial means of fastening it to any supporting structure, all substantially as hereinafter set forth-and claimed.

In the accompanying drawings, Figure 1 represents a vertical central section of the airpump cylinder, tank, and base embodying our invention, the valve, the piston, and attached parts being shown in side elevation. Fig. 2 represents an enlarged-vertical section of the central part of the said base and the Valve contained therein. Fig. 3 represents a detail View of the said valve. Fig. 4 represents a perspective view of the base, taken from above. Fig. 5 represents a similar viewof this base and its fastening-plate slightly taken from below.

A designates the cylindrical shell of a vertical tank, andB the'concentric'inclosed but longer cylinder of an air-pump, having a piston C and a piston-rod C, preferably handoperated by means of a handle D. The head of this cylinder is provided with air-inlet holes I). The upper part of said tank is provided with a lateral outlet E, which may be coupled to a nebulizer, left unshown as having no necessary connection with the present invention.

separated,

F designates a base-plate, preferably cast of tin, antimony, and lead or some similar alloy of natural polish needing no subsequent polishing work and hard enough for safe soldering and durability,- while adapted to be cast without intense heat. This base-plate has a central block or hub G raised on it to also an annular horizontal shoulder or ledge F to receive thelower edge of the said tank just within the raised peripheral rim F of the said base-plate, the said cylinder and tank being soldered to the parts with which they are thus in contact. The said base-plate is provided with a transverse tapering dovetailed groove H in its bottom to fita similarly shaped fastening-plate H, which may be fastened to a floor, table, orother support or against a wall or other upright structure. In the latter case the position of the apparatus as a whole-will be horizontal instead of the vertical position shown. In either case it will be easily attached and-as easily removed, the

isscrewthreaded...in part at'e' to receive the corresponding screw-threads of the said valveshell near its screw-head, which closes the opening of the latter into groove F beingflush with the upper wall or top of the latter when in place. nular outer screw-threaded part the said valveshell consists of several inwardly-extending parts J, integral with said annular part, but divided by longitudinal slots m extending from their inner ends as far as said annular part, and are also recessed externally to form a broad annular groove n about the middle of the shell, broken only by said slots. When fit within the lower end of the said cylinder,

Besides this head and the anthe valve-shell is in its place in hub G of baseplate F, the wall of the recess I makes, with the said slots m and groove n, a series of longitudinal passages supplied by bore G and an outer passage supplied by these longitudinal passages and discharging through a side outlet l of hub G and a registering hole or opening Z in the lower part of cylinder B into the interior of tank or air-reservoir A, whence it passes through the outlet first above mentioned. The number of these longitudinal passages formed by slots minsures a free flow of air, and the annular form of groove n avoids all risk of not making perfect connection with the side outlet Z. The said parts J are provided on their inner faces with shoulders 0, which collectively form an annular support with slight intervals for an aluminium valvedisk 0 and a rubber valve-disk P resting thereon, these disks constituting the valve proper, though the valve may be considered as comprising the above-described shell. The valveseat Q is the upper end of the recess I aforesaid surrounding the bore or airpassage g. hen the downward pressure of piston C is relaxed, the back pressure of the air in tank A through passages Z n m, bearing against aluminium disk 0, forces the rubber disk P against said seat, closing the passage through the latter. he said valve is not claimed herein, forming in part the subject-matter of our application Serial No. 168,326, of which this is a division.

The base-plate herein described may of course be used with valves of different construction, and the one above shown and described appears in the present application for purposes of illustration only and because some check-valve or its equivalent is necessary to complete an operative device. The said baseplate may be wrought or cast or of other material than metal, the word "plate not being intended as a limitation. The pump, tank, and base may be used for other purposes than supplying air to nebulizers and with other fluids.

Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is-

1. In combination with the cylinder of a pump and an inclosing tank, a check-valve, a casingtherefor and a base-plate, provided with a recess for said valve-casing and raised parts to fit the said cylinder and tank, one of the said parts being provided also with an inlet from said cylinder to said recess above the valve and with an outlet from said cylinder below the valve proper to the said tank sub stantially as set forth.

2. In combination with a fixed fasteningplate of dovetailed and tapering form, a baseplate grooved to fit the said plate and recessed to receive a check-valve casing, and a pumpcylinder and a tank arranged concentrically and attached to said plate substantially as set forth.

3. In combination with a check-valve and its casing, a base-plate for a pump and tank provided with a part which is recessed to receive this valve and casing and provided with an inlet-passage from the interior of said pump to the said recess and an outlet-passage from the said recess to the interior of the said tank, the said valve fitting the said recess and provided with passages between these parts which permit the inflow of the air through the valve to the tank and the closing of the valve by back pressure substantially as set forth.

4:. In combinatio .1 with cylindrical tank A and pump-cylinder B, the circular base-plate F supporting the said parts, this base-plate being provided with a raised rim fitting around the lower end of the said tank, a ledge for the latter to rest on a central hub fitting within the lower end of the said cylinder, a lateral passage Z communicating with the interior of the tank, an outlet-bore Gr communicating with the interior of the pump-cylinder and a checkvalve between the said passages and bore substantially as set forth.

5. In combination with atank and pumpcylinder arranged concentrically and a tapering dovetailed fastening-plate adapted to be attached to a supporting article or structure, a base provided with a tapering, dovetailed groove, fitting the said fastening-plate, a raised peripheral rim and hub, fitting said tank and cylinder respectively, a central recess the wall of which is screw-threaded at its outer end, passages connecting the said recess with the interior of the said tank and cylinder respectively, a check-valve in said recess automatically governing communication between these passages and a casing for said valve, said casing being screw-threaded for engaging the screw-threaded part of the wall of the recess to hold the said valve detachably in place substantially as set forth.

In testimony whereof we hereby sign our names to this specification in the presence of two subscribing witnesses.

WILLIAM BOEKEL. JULIUS BOEKEL.

IV itnesses 7 JOHN H. SCHERER, WILLIAM A. WIMER. 

